A Self-Adapting Synchronized-Switch Interface Circuit for Piezoelectric Energy Harvesters

Date

2020-01-01

Author

Chamanian, Salar
Muhtaroglu, Ali
Külah, Haluk

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This paper presents a self-adapting synchronized-switch harvesting (SA-SSH) interface circuit to extract energy from vibration-based piezoelectric energy harvesters (PEHs). The implemented circuit utilizes a novel switching technique to recycle optimum amount of harvested charge on piezoelectric capacitance to strengthen the damping force, and simultaneously achieve load-independent energy extraction with a single inductor. Charge recycling is realized by adjusting extraction time, and optimized through a maximum power point tracker based on charge-flipping dissipation. The circuit has been implemented using 180 nm HV CMOS technology with 0.9 x 0.6 mm(2) active area. Self-adapting SSH circuit has been validated with both macro-scaled and MEMS PEHs with different inductor values. The interface circuit provides maximum energy extraction for the full storage voltage range of 1.8-3.7 V. The implementation harnesses have 500% more power compared to an ideal full-bridge rectifier, and output 3.4 mu W for 2.24V peak-to-peak open-circuit piezoelectric voltage from MEMS PEH excited at its resonant frequency.

Subject Keywords

Electrical and Electronic Engineering

URI

https://hdl.handle.net/11511/42885

Journal

IEEE TRANSACTIONS ON POWER ELECTRONICS

DOI

https://doi.org/10.1109/tpel.2019.2910410

Collections

Department of Electrical and Electronics Engineering, Article

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Citation Formats

S. Chamanian, A. Muhtaroglu, and H. Külah, “A Self-Adapting Synchronized-Switch Interface Circuit for Piezoelectric Energy Harvesters,” IEEE TRANSACTIONS ON POWER ELECTRONICS, pp. 901–912, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42885.